IPVS: set_ctl: invalid protocol: 43 172.20.20.170:20003 lblcr
IPVS: set_ctl: invalid protocol: 43 172.20.20.170:20003 lblcr
WARNING: CPU: 0 PID: 10029 at net/ipv4/tcp_input.c:1803 tcp_sacktag_write_queue+0x1aa2/0x2d80 net/ipv4/tcp_input.c:1803
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 10029 Comm: syz-executor6 Not tainted 4.17.0-rc2+ #25
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1b9/0x294 lib/dump_stack.c:113
 panic+0x22f/0x4de kernel/panic.c:184
 __warn.cold.8+0x163/0x1b3 kernel/panic.c:536
 report_bug+0x252/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1de/0x490 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992
RIP: 0010:tcp_sacktag_write_queue+0x1aa2/0x2d80 net/ipv4/tcp_input.c:1803
RSP: 0018:ffff8801dae06308 EFLAGS: 00010206
RAX: ffff8801b8a0a440 RBX: ffff8801d8d488c0 RCX: ffffffff864b1de4
RDX: 0000000000000100 RSI: ffffffff864b1df2 RDI: 0000000000000004
RBP: ffff8801dae06438 R08: ffff8801b8a0a440 R09: 0000000000000000
R10: ffffed0043fff001 R11: ffff88021fff8017 R12: 0000000000000004
R13: 0000000000000003 R14: ffff8801d8d48000 R15: 0000000000000001
 tcp_ack+0x3093/0x5510 net/ipv4/tcp_input.c:3597
 tcp_rcv_state_process+0xc60/0x5002 net/ipv4/tcp_input.c:5913
 tcp_v4_do_rcv+0x365/0x8c0 net/ipv4/tcp_ipv4.c:1499
 tcp_v4_rcv+0x2d67/0x38c0 net/ipv4/tcp_ipv4.c:1765
 ip_local_deliver_finish+0x2e3/0xd80 net/ipv4/ip_input.c:215
 NF_HOOK include/linux/netfilter.h:288 [inline]
 ip_local_deliver+0x1e1/0x720 net/ipv4/ip_input.c:256
 dst_input include/net/dst.h:450 [inline]
 ip_rcv_finish+0x81b/0x2200 net/ipv4/ip_input.c:396
 NF_HOOK include/linux/netfilter.h:288 [inline]
 ip_rcv+0x9fe/0x125c net/ipv4/ip_input.c:492
 __netif_receive_skb_core+0x26f5/0x3630 net/core/dev.c:4603
 __netif_receive_skb+0x2c/0x1e0 net/core/dev.c:4668
 process_backlog+0x219/0x760 net/core/dev.c:5348
 napi_poll net/core/dev.c:5746 [inline]
 net_rx_action+0x7b7/0x1930 net/core/dev.c:5812
 __do_softirq+0x2e0/0xaf5 kernel/softirq.c:285
 invoke_softirq kernel/softirq.c:365 [inline]
 irq_exit+0x1d1/0x200 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:525 [inline]
 smp_apic_timer_interrupt+0x17e/0x710 arch/x86/kernel/apic/apic.c:1052
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
 </IRQ>
RIP: 0010:lock_release+0x9f/0xa10 kernel/locking/lockdep.c:3932
RSP: 0018:ffff8801c947e7d0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: ffff8801b8a0ac74 RBX: 1ffff1003928fcff RCX: 1ffff1003928fd13
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8801b8a0ac74
RBP: ffff8801c947e900 R08: ffffed003b5c46c3 R09: ffffed003b5c46c2
R10: ffffed003b5c46c2 R11: ffff8801dae23613 R12: ffff8801c947e8d8
R13: ffffffff88d8e660 R14: ffff8801c947eb90 R15: ffff8801b8a0a440
 rcu_lock_release include/linux/rcupdate.h:251 [inline]
 rcu_read_unlock include/linux/rcupdate.h:688 [inline]
 __unlock_page_memcg+0x72/0x100 mm/memcontrol.c:1654
 unlock_page_memcg+0x2c/0x40 mm/memcontrol.c:1663
 page_remove_file_rmap mm/rmap.c:1248 [inline]
 page_remove_rmap+0x6f2/0x1250 mm/rmap.c:1299
 zap_pte_range mm/memory.c:1337 [inline]
 zap_pmd_range mm/memory.c:1441 [inline]
 zap_pud_range mm/memory.c:1470 [inline]
 zap_p4d_range mm/memory.c:1491 [inline]
 unmap_page_range+0xeb4/0x2200 mm/memory.c:1512
 unmap_single_vma+0x1a0/0x310 mm/memory.c:1557
 unmap_vmas+0x120/0x1f0 mm/memory.c:1587
 exit_mmap+0x265/0x570 mm/mmap.c:3038
 __mmput kernel/fork.c:961 [inline]
 mmput+0x251/0x610 kernel/fork.c:982
 exit_mm kernel/exit.c:544 [inline]
 do_exit+0xe98/0x2730 kernel/exit.c:852
 do_group_exit+0x16f/0x430 kernel/exit.c:968
 get_signal+0x886/0x1960 kernel/signal.c:2469
 do_signal+0x98/0x2040 arch/x86/kernel/signal.c:810
 exit_to_usermode_loop+0x28a/0x310 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
 do_syscall_64+0x6ac/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455979
RSP: 002b:00007fd09ce13ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000072bf78 RCX: 0000000000455979
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000072bf78
RBP: 000000000072bf78 R08: 0000000000000000 R09: 000000000072bf50
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000a3e81f R14: 00007fd09ce149c0 R15: 0000000000000001
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..